---
title: What is aquaplaning? — Friction: the grip that stops and helps · tree and pragmatics
description: What is aquaplaning? Test 7 of lesson 6 «Friction: the grip that stops and helps» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 7 · Friction: the grip that stops and helps

<!-- .ven lang=en -->
What is aquaplaning?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **What happens:** aquaplane

<!-- .vabout -->
This is test 7 of lesson 6 «Friction: the grip that stops and helps» of the physics course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/6-friction-the-grip/#t7).

## The question {#question}

```conllu
# sent_id = question:physics:6-friction-the-grip:t7:1
# text = What is aquaplaning?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux	_	_
3	aquaplaning	aquaplane	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **aquaplane** | present · progressive |  |  |  |  |  |  | tree rules |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
A plane landing on the sea

```conllu
# sent_id = question:physics:6-friction-the-grip:t7:o1:1
# text = A plane landing on the sea
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	plane	plane	NOUN	NN	Number=Sing	0	root	_	_
3	landing	land	VERB	VBG	Tense=Pres|VerbForm=Part	2	acl	_	_
4	on	on	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	sea	sea	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **land** | gerund | a plane *not said here* |  |  | the sea |  |  | vn pocket-9.10-1 «NP V PP.destination»: agent=Theme on sea=Destination |

### Option 2 {#o2}

<!-- .ven lang=en -->
A tyre filling up with water

```conllu
# sent_id = question:physics:6-friction-the-grip:t7:o2:1
# text = A tyre filling up with water
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	tyre	tyre	NOUN	NN	Number=Sing	0	root	_	_
3	filling	fill	VERB	VBG	VerbForm=Ger	2	acl	_	_
4	up	up	ADP	RP	_	3	compound:prt	_	_
5	with	with	ADP	IN	_	6	case	_	_
6	water	water	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fill up** | gerund | a tyre *not said here* |  |  |  |  | with water | vn other\_cos-45.4 «NP V NP PP.instrument»: agent=Agent with water=Instrument |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
A car sliding on a layer of water under its tyres

```conllu
# sent_id = question:physics:6-friction-the-grip:t7:o3:1
# text = A car sliding on a layer of water under its tyres
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	car	car	NOUN	NN	Number=Sing	0	root	_	_
3	sliding	slide	VERB	VBG	VerbForm=Ger	2	acl	_	_
4	on	on	ADP	IN	_	6	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	layer	layer	NOUN	NN	Number=Sing	3	obl	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	water	water	NOUN	NN	Number=Sing	6	nmod	_	_
9	under	under	ADP	IN	_	11	case	_	_
10	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	11	nmod:poss	_	_
11	tyres	tyre	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **slide** | gerund | a car *not said here* |  |  | a layer of water |  | under water's tyres | vn roll-51.3.1 «NP.theme V PP.source PP.trajectory PP.destination»: agent=Theme on layer=Source under tyre=Trajectory |

### Option 4 {#o4}

<!-- .ven lang=en -->
A boat going very fast

```conllu
# sent_id = question:physics:6-friction-the-grip:t7:o4:1
# text = A boat going very fast
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	boat	boat	NOUN	NN	Number=Sing	0	root	_	_
3	going	go	VERB	VBG	VerbForm=Ger	2	acl	_	_
4	very	very	ADV	RB	_	5	advmod	_	_
5	fast	fast	ADV	RB	Degree=Pos	3	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **go** | gerund | a boat *not said here* |  |  |  |  | fast *property* | vn disappearance-48.2-1 «NP V»: agent=Theme |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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- ← previous: [Friction: the grip that stops and helps, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/physics/6-friction-the-grip/t6/)
- next →: [Friction: the grip that stops and helps, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/physics/6-friction-the-grip/t8/)
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